Sight Glass 8-1/2" Long Water Level Glass Tube Steam Boiler Replacement Part

DUCO® High-Pressure 'CLEAR' Sight Gauge Glass (5/8" OD x 8-1/2" Long) for Steamers

with 2 EPDM Gaskets

• For Steam Boilers, Jewelry Steamers, Return Tanks and Reservoirs.
• Considerably higher working pressure than other STANDARD glasses. 
• Provides super clear and accurate reading of water levels in industrial and commercial applications. 
• Outstanding thermal, chemical and hydrolytic resistance.
• Fits to 5/8" OD tubular sight glasses of all Brands Steam Boilers, Jewelry Steamers, Return Tanks and Reservoirs.
• All DUCO® High Pressure Tubular Gauge Glasses come with Free 2 of EPDM Gaskets.

* Buy 2 or more to get extra discount of 10% *

Sight Glass Specifications:

• Material: Borosilicate 3.3 Glass
• Working Pressures: up to 460 psi at temperature up to 150 ºF without corrosion.
• Fire-Polished End
• OD (Outside Diameter): 5/8" (15.88 mm) ± 0, -1/32”
• Length:   8-1/2"
• Wall Thickness: 7/64" (2.6 mm) ± 1/64”
• Steam boiler service working Pressure:

          Length (Inch)       Temperatures up to 150 ºF,          Steam Boiler Service

       up to                         w/o corrosion                             up to 425 ºF

             8                                   460                                              340

           10                                   445                                              335

           12                                   435                                              325

           14                                   415                                              315

           16                                   400                                              300

Gasket Specifications:

• Material: Premium EPDM (holds up to 302 ºF, 150 ºC)
• I D:       5/8" (15.88 mm)
• OD:  27/32" (21.50 mm)
• TH:    11/32" (8.50 mm)